/*
 * jETeL/CloverETL - Java based ETL application framework.
 * Copyright (c) Javlin, a.s. (info@cloveretl.com)
 *  
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
package org.jetel.database.sql;


/**
 * @author Kokon (info@cloveretl.com)
 *         (c) Javlin, a.s. (www.cloveretl.com)
 *
 * @created 28.1.2013
 */
public enum QueryType {

	INSERT,
	UPDATE,
	DELETE,
	SELECT,
	UNKNOWN;

	public static QueryType fromSqlQuery(String sqlQuery) {
        if (sqlQuery == null) {
            throw new NullPointerException("sqlQuery");
        }

        String normalizedSqlQuery = sqlQuery.trim().toUpperCase();

        for (QueryType queryType : values()) {
			if (normalizedSqlQuery.startsWith(queryType.name())) {
				return queryType;
			}
		}

		return UNKNOWN;
	}

}
